:root{
  --bg:#FAFAF8; --ink:#414042; --ink2:#6c6c6e; --line:#e9e7e2;
  --red:#EC1C24; --red-d:#c9151c; --steel:#45464a; --card:#ffffff;
  --r:18px; --maxw:1120px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:'Inter',Arial,Helvetica,sans-serif;
  -webkit-font-smoothing:antialiased;line-height:1.5;overflow-x:hidden;
}
.lanex{color:var(--red);font-weight:800;letter-spacing:.5px}
strong{font-weight:700}
em{font-style:normal;color:var(--red)}

/* header */
.top{
  max-width:var(--maxw);margin:0 auto;padding:22px 26px;
  display:flex;align-items:center;justify-content:space-between;
}
.brand{font-size:19px;font-weight:700;letter-spacing:.3px;display:flex;gap:9px;align-items:center}
.brand .sep{color:#cfccc5}
.brand .prod{color:var(--ink);font-weight:600}
.top-tag{font-size:12.5px;color:var(--ink2);text-transform:uppercase;letter-spacing:1.5px}
.lang{display:flex;gap:4px;font-size:13px;font-weight:600}
.lang a{color:var(--ink2);text-decoration:none;padding:5px 9px;border-radius:9px;letter-spacing:.3px;transition:background .2s var(--ease),color .2s var(--ease)}
.lang a:hover{color:var(--ink);background:#f1f0ec}
.lang a.on{color:#fff;background:var(--red)}

main{max-width:var(--maxw);margin:0 auto;padding:0 26px}

/* hero */
.hero{text-align:center;padding:38px 0 6px}

/* hero – západní (sunset) full-bleed varianta */
.hero--sunset{
  position:relative;width:100vw;margin-left:calc(50% - 50vw);
  min-height:clamp(440px,62vh,600px);display:flex;align-items:center;justify-content:center;
  padding:60px 0;overflow:hidden;
  background:#26272a url('img/energo-vedeni.jpg') center 42%/cover no-repeat;
}
.hero--sunset::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(18,16,20,.30) 0%,rgba(18,16,20,.40) 45%,rgba(18,16,20,.62) 100%);
}
.hero--sunset .hero-inner{position:relative;z-index:1;max-width:780px;padding:0 26px;text-align:center}
.hero--sunset h1{color:#fff;text-shadow:0 2px 30px rgba(0,0,0,.35)}
.hero--sunset em{color:#ff6167}
.hero--sunset .lead{color:rgba(255,255,255,.90);margin-top:18px}
.hero--sunset .lead strong{color:#fff}
.hero--sunset .eyebrow{color:#fff;border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.08)}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:3px;color:var(--red);
  padding:7px 14px;border:1.5px solid rgba(236,28,36,.25);border-radius:100px;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(34px,6vw,64px);line-height:1.04;font-weight:800;letter-spacing:-1.5px;
}
.lead{
  max-width:600px;margin:20px auto 0;font-size:clamp(15px,2.2vw,18px);color:var(--ink2);
}
.hero-photo{
  position:relative;margin:34px 0 0;border-radius:22px;overflow:hidden;
  box-shadow:0 34px 80px -46px rgba(65,64,66,.55);
}
.hero-photo img{
  display:block;width:100%;height:clamp(230px,33vw,400px);object-fit:cover;object-position:center 40%;
}
.hero-photo figcaption{
  position:absolute;left:18px;bottom:16px;
  background:rgba(255,255,255,.82);backdrop-filter:blur(6px);
  color:var(--ink);font-size:12.5px;font-weight:600;padding:8px 14px;border-radius:100px;
  box-shadow:0 6px 18px -8px rgba(65,64,66,.45);
}

/* 3D stage */
.stage-wrap{position:relative;margin:44px 0 0}
.stage-cap{text-align:center;font-size:14px;color:var(--ink2);margin-bottom:2px}
.stage-cap strong{color:var(--ink)}
#scene{
  width:100%;height:clamp(320px,46vw,480px);
}
#scene canvas{display:block;width:100%!important;height:100%!important}
.scale-labels{
  position:absolute;left:0;right:0;bottom:6px;display:flex;justify-content:center;gap:40px;
  pointer-events:none;
}
.sl{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--ink2)}
.sl .dot{width:11px;height:11px;border-radius:50%}
.sl.steel .dot{background:var(--steel)}
.sl.hmpe .dot{background:var(--red)}

/* panel */
.panel{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:26px;
  padding:34px;margin:14px 0 0;box-shadow:0 24px 60px -36px rgba(65,64,66,.35);
}
.controls{display:flex;flex-direction:column;gap:26px}
.ctrl label{display:block;font-size:13.5px;font-weight:600;color:var(--ink2);margin-bottom:12px}
.ctrl label b{color:var(--ink);font-weight:700;float:right}
.seg{display:flex;gap:8px;background:#f3f1ec;padding:5px;border-radius:13px}
.seg button{
  flex:1;border:0;background:transparent;font:inherit;font-weight:600;font-size:14px;color:var(--ink2);
  padding:11px 0;border-radius:9px;cursor:pointer;transition:all .25s var(--ease);
}
.seg button.on{background:#fff;color:var(--ink);box-shadow:0 2px 8px -3px rgba(65,64,66,.35)}
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:6px;
  background:linear-gradient(90deg,var(--red) var(--p,40%),#ececE7 var(--p,40%));cursor:pointer;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:24px;height:24px;border-radius:50%;background:#fff;
  border:2px solid var(--red);box-shadow:0 3px 10px -2px rgba(236,28,36,.5);transition:transform .15s}
input[type=range]::-webkit-slider-thumb:active{transform:scale(1.15)}
input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:#fff;border:2px solid var(--red)}

/* results */
.results{display:flex;flex-direction:column;gap:22px}
.hero-save{display:flex;align-items:baseline;gap:16px}
.hs-num{font-size:clamp(58px,10vw,96px);font-weight:800;color:var(--red);letter-spacing:-3px;line-height:.9}
.hs-num .pct{font-size:.42em;margin-left:4px}
.hs-cap{font-size:16px;font-weight:600;color:var(--ink2);max-width:150px;line-height:1.25}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card{background:var(--bg);border:1px solid var(--line);border-radius:15px;padding:16px 16px 15px}
.card.accent{border-color:rgba(236,28,36,.22);background:#fff6f6}
.card.save{background:var(--ink);border-color:var(--ink)}
.c-lab{font-size:11.5px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:var(--ink2);margin-bottom:10px}
.card.save .c-lab{color:rgba(255,255,255,.65)}
.c-num{font-size:27px;font-weight:800;letter-spacing:-.6px;color:var(--ink)}
.card.accent .c-num{color:var(--red)}
.card.save .c-num{color:#fff}
.c-num .u{font-size:.5em;font-weight:600;color:var(--ink2);margin-left:4px}
.card.save .c-num .u{color:rgba(255,255,255,.6)}
.c-sub{font-size:12.5px;color:var(--ink2);margin-top:6px}
.card.save .c-sub{color:rgba(255,255,255,.7)}

/* benefits */
.benefits{
  display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin:40px 0 0;
}
.ben{display:flex;gap:12px;align-items:flex-start}
.ben .b-ic{
  flex:none;width:40px;height:40px;border-radius:11px;background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--red);
}
.ben .b-ic svg{width:20px;height:20px}
.ben b{display:block;font-size:14px;font-weight:700}
.ben span{display:block;font-size:12.5px;color:var(--ink2);margin-top:2px;line-height:1.35}

/* products */
.products{margin:56px 0 0}
.sec-head{text-align:center;margin-bottom:28px}
.sec-head .eyebrow{margin-bottom:16px}
.sec-head h2{font-size:clamp(24px,4vw,34px);font-weight:800;letter-spacing:-.8px}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px 20px;transition:transform .25s var(--ease),box-shadow .25s}
.pcard:hover{transform:translateY(-4px);box-shadow:0 22px 44px -28px rgba(65,64,66,.4)}
.pcard .pc-top{font-size:12px;font-weight:800;letter-spacing:1.5px;color:var(--red);margin-bottom:14px}
.pcard.hl{background:var(--ink);border-color:var(--ink)}
.pcard.hl .pc-top{color:#ff6a70}
.pcard b{display:block;font-size:16px;font-weight:700;margin-bottom:7px}
.pcard.hl b{color:#fff}
.pcard span{display:block;font-size:13px;color:var(--ink2);line-height:1.45}
.pcard.hl span{color:rgba(255,255,255,.72)}

/* cta / form */
.cta{margin:56px 0 0;scroll-margin-top:24px}
.cta-in{
  background:linear-gradient(135deg,#fff 0%,#fff7f6 100%);
  border:1px solid rgba(236,28,36,.18);border-radius:26px;padding:46px 34px;text-align:center;
}
.cta h2{font-size:clamp(23px,4vw,32px);font-weight:800;letter-spacing:-.8px}
.cta p{color:var(--ink2);margin:12px 0 26px;font-size:16px}
.btn{
  display:inline-block;background:var(--red);color:#fff;font-weight:700;font-size:16px;
  padding:16px 34px;border-radius:100px;text-decoration:none;
  box-shadow:0 14px 30px -12px rgba(236,28,36,.6);transition:transform .2s var(--ease),box-shadow .2s;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 20px 40px -12px rgba(236,28,36,.7)}
.note{max-width:620px;margin:18px auto 0;font-size:12px;color:#9b9a96;line-height:1.5}

/* lead form */
.form-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;text-align:left;align-items:center}
.form-copy .eyebrow{margin-bottom:16px}
.form-copy h2{font-size:clamp(24px,3.6vw,34px);font-weight:800;letter-spacing:-.8px;line-height:1.08}
.form-copy p{color:var(--ink2);margin:14px 0 18px;font-size:15.5px}
.fc-list{list-style:none;display:flex;flex-direction:column;gap:9px}
.fc-list li{position:relative;padding-left:26px;font-size:14px;font-weight:500}
.fc-list li:before{content:"";position:absolute;left:0;top:6px;width:14px;height:8px;border-left:2.5px solid var(--red);border-bottom:2.5px solid var(--red);transform:rotate(-45deg)}
.lead-form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:0 24px 60px -40px rgba(65,64,66,.4)}
.hp{position:absolute;left:-9999px;opacity:0}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.lead-form label{display:block;font-size:12.5px;font-weight:600;color:var(--ink2);margin-bottom:14px}
.lead-form label .opt{color:#b9b6b0;font-weight:400}
.lead-form input[type=text],.lead-form input[type=email],.lead-form textarea{
  width:100%;margin-top:7px;font:inherit;font-size:15px;color:var(--ink);
  background:var(--bg);border:1.5px solid var(--line);border-radius:11px;padding:12px 13px;transition:border-color .2s,box-shadow .2s;
}
.lead-form input:focus,.lead-form textarea:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(236,28,36,.12)}
.lead-form textarea{resize:vertical;min-height:70px}
.lead-form .btn{width:100%;margin-top:4px;border:0;cursor:pointer;font:inherit;font-weight:700;font-size:16px}
.lead-form .btn[disabled]{opacity:.6;cursor:default}
.form-msg{font-size:14px;font-weight:600;margin-top:14px;text-align:center;display:none}
.form-msg.ok{display:block;color:#1a8a4a}
.form-msg.err{display:block;color:var(--red)}
.lead-form .note{margin-top:14px;text-align:left}

.disclaimer{max-width:760px;margin:30px auto 0;font-size:12px;color:#aba9a3;line-height:1.5;text-align:center}

/* footer */
.foot{max-width:var(--maxw);margin:48px auto 0;padding:26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink2);text-align:center}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reduced .reveal{opacity:1;transform:none;transition:none}

/* responsive */
@media(max-width:860px){
  .panel{grid-template-columns:1fr;gap:28px;padding:26px}
  .benefits{grid-template-columns:repeat(2,1fr);gap:20px}
  .hero-save{justify-content:center;text-align:center}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr;gap:26px}
}
@media(max-width:520px){
  .top-tag{display:none}
  .cards{grid-template-columns:1fr 1fr}
  .card.save{grid-column:1/3}
  .benefits{grid-template-columns:1fr}
  .prod-grid{grid-template-columns:1fr}
  .frow{grid-template-columns:1fr}
  .lead-form{padding:20px}
  .cta-in{padding:30px 20px}
  .scale-labels{gap:22px}
}

.tools-link{text-align:center;margin:22px 0 0}
.tools-link a{color:var(--red);font-weight:700;font-size:15px;text-decoration:none;border-bottom:2px solid transparent;transition:border-color .2s}
.tools-link a:hover{border-color:var(--red)}